Costa Del Mar Sunglasses go way beyond fashion. Born of a love for the water, Costa Del Mar specializes in sunglass technology for the very harshest conditions. Designed to counter the relentless attack of glare and salt water, Costa Del Mar sunglasses are among the toughest on Earth. The Ansil is no exception. Sure, the Ansil looks great. The real beauty, however lies within the high-tech 580P lens. - $168.95